transformer and rectified to 24 volts DC for operation of all system
initiating, actuating, signal sounding, trouble signal and fire alarm
tripping circuits. System shall be electrically supervised on all
circuits. [A ground fault condition or a single break in any circuit which
prevents the required operation of the system shall result in the operation
of the system trouble signal.] [A single open or ground fault condition in
any detection (initiating) [or signaling] circuit shall not result in any
loss of system function, but shall cause the actuation of system trouble
signals. A ground fault condition or single break in any other circuit
shall result in the activation of the system trouble signals.] Loss of AC
power, a break in the standby battery power circuits, or abnormal AC power
or low battery voltage shall result in the operation of the system trouble
signals. The abnormal position of any system switch in the control panel
shall result in the operation of the system trouble signals. Trouble
signals shall operate continuously until the system has been restored to
normal at the control panel. System trouble shall also be annunciated on
the appropriate zone of the building fire alarm panel. [Provide a 100 mm 4
inch remote system trouble bell [or buzzer], installed [in a constantly
attended area] [where shown], arranged to operate in conjunction with the
integral trouble signals of the panel. Provide remote bell [or buzzer]
with a rigid plastic or metal identification sign which reads "Foam System
Trouble." Lettering on identification sign shall be a minimum of 25 mm one
inch high.] Control panel, batteries, and battery charger shall be
weatherproof type or located in an area not subject to water damage.
System control panel shall be UL listed or FM approved for extinguishing
system control (releasing device service). Permanently label all switches.
Provide panel with the following switches:
a.
Trouble silencing switch which transfers audible trouble signals
(including remote trouble devices, if provided) to an indicating
lamp. Upon correction of the trouble condition, audible signals
will again sound until the switch is returned to its normal
position, or the trouble signal circuit shall be automatically
restored to normal upon correction of the trouble condition. The
silencing switch may be a momentary action, self-resetting type.
b.
Alarm silencing switch which when activated will silence all
associated alarm devices without resetting the panel, and cause
operation of system trouble signals.
c.
Individual zone disconnect switches which when operated will
disable only their respective initiating circuit and cause
operation of the system and zone trouble signals.
d.
Reset switch which when activated will restore the system to
normal standby status after the cause of the alarm has been
corrected, and all activated initiating devices reset. [Operation
of reset switch shall restore activated smoke detectors to normal
standby status.]
e.
Lamp test switch.
[f.
City disconnect switch which when activated will disconnect the
coded device and cause operation of the system trouble signal.]
2.3.1.1
Main Annunciator
Provide integral with the main control panel. Provide separate alarm and
trouble lamps for each zone alarm initiating circuit as indicated below,
SECTION 13958N
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